-(-2.8-7n)=2.6+7.2n

Solution for -(-2.8-7n)=2.6+7.2n equation:

Simplifying
-1(-2.8 + -7n) = 2.6 + 7.2n
(-2.8 * -1 + -7n * -1) = 2.6 + 7.2n
(2.8 + 7n) = 2.6 + 7.2n

Solving
2.8 + 7n = 2.6 + 7.2n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-7.2n' to each side of the equation.
2.8 + 7n + -7.2n = 2.6 + 7.2n + -7.2n

Combine like terms: 7n + -7.2n = -0.2n
2.8 + -0.2n = 2.6 + 7.2n + -7.2n

Combine like terms: 7.2n + -7.2n = 0.0
2.8 + -0.2n = 2.6 + 0.0
2.8 + -0.2n = 2.6

Add '-2.8' to each side of the equation.
2.8 + -2.8 + -0.2n = 2.6 + -2.8

Combine like terms: 2.8 + -2.8 = 0.0
0.0 + -0.2n = 2.6 + -2.8
-0.2n = 2.6 + -2.8

Combine like terms: 2.6 + -2.8 = -0.2
-0.2n = -0.2

Divide each side by '-0.2'.
n = 1

Simplifying
n = 1